Isikhala Sekhadi Lememori Eliphindwe Kabili Lekhamera Yedijithali
Esikhathini sezithombe zanamuhla kanye nevidiyo, amakhamera edijithali awasasetshenziswa nje ukuthwebula izikhathi ezilula. Abasebenzisi abaningi—kusukela kubathwebuli bezithombe zomshado kanye nezintatheli kuya kubadali bokuqukethwe kanye nezisebenzi zezinkampani—bathembele kumakhamera njengethuluzi labo eliyinhloko lomsebenzi. Ngakho-ke, ukuthembeka kokugcinwa kwedatha kubalulekile. Esinye isici esitholakala kakhulu kumakhamera aphakathi kuya kumakhamera ochwepheshe yizikhala ezimbili zememori khadi. Lesi sici singase sibonakale silula: izindawo ezimbili zokufaka amakhadi ememori. Kodwa-ke, sinomthelela omkhulu ekuphepheni kwamafayela, ukuhamba kahle komsebenzi, kanye nokuguquguquka kokuhamba kokukhiqiza.
Lesi sihloko sixoxa ngokuthi yiziphi izimbobo zekhadi lememori ezimbili, ukuthi zisebenza kanjani, izinzuzo zazo, izinhlobo zokulungiselela ezivamile, kanye nezinto okufanele uzicabangele ngaphambi kokukhetha ikhamera enalesi sici.
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Iyini i-Dual Memory Card Slot?
Isikhala sekhadi lememori elikabili siyisici kumakhamera edijithali esivumela abasebenzisi ukufaka amakhadi ememori amabili ngesikhathi esisodwa. Lawa masikhala amabili angaba uhlobo olufanayo lwekhadi (isb., i-SD + SD) noma ahluke (isb., i-CFexpress + SD, noma i-XQD + SD). Ukuba namasikhala amabili kunikeza ikhamera ikhono lokulawula indlela amafayela ezithombe namavidiyo abhalwa ngayo: ukuthi akopishwa kumakhadi womabili ngesikhathi esisodwa, ahlukaniswe ngohlobo lwefayela, noma asetshenziswa ngokushintshana lapho ikhadi elilodwa ligcwele.
Kumakhamera ochwepheshe, ama-slots amabili avame ukubhekwa njengendinganiso ngoba ingozi yokulahleka kwedatha ngenxa yomonakalo wekhadi, iphutha lomsebenzisi, noma izinkinga zobuchwepheshe ingaba yingozi kakhulu—ikakhulukazi uma isikhathi esithwetshuliwe singenakuphindwa.
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Kungani Kubalulekile Ukuba Nezikhala Ezimbili?
Amakhadi ememori ayizingxenye ezincane, kodwa adlala indima ebalulekile. Amakhadi angabhekana namaphutha, ukonakala kwedatha, noma angafundeki. Lokhu akwenzeki njalo, kodwa uma kwenzeka, imiphumela ingaba mibi kakhulu: izithombe zomshado ezilahlekile, ukuqoshwa kwengxoxo eyonakele, noma izithombe zomsebenzi zamakhasimende ezingasetshenziswa. Ngama-slots amabili, amakhamera anganikeza isendlalelo esengeziwe sokuphepha.
Ngaphandle kokuphepha, ama-slots amabili aphinde akhuthaze ukuhamba komsebenzi okulula kakhulu. Abathwebuli bezithombe abathwebula i-RAW ne-JPEG, isibonelo, bangahlukanisa imiphumela ukuze basheshise inqubo yokukhetha nokulethwa. Abathwebuli bevidiyo bangahlela futhi imidiya yabo ukuze baqophe isikhathi eside ngaphandle kokushintsha amakhadi njalo.
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Imodi Ejwayelekile Yesikhala Sekhadi Lememori Elibili noma Ukucushwa
Uhlobo ngalunye lwekhamera lunemibandela yemenyu ehlukene kancane, kodwa ngokuvamile kunezilungiselelo ezintathu eziyinhloko:
1. Isipele / Ukuqopha Ngesikhathi Esifanayo (Okuphindwe Kabili Kumakhadi Amabili)
Kule modi, ikhamera ibhala ifayela elifanayo kumakhadi womabili 1 no-2 ngesikhathi esisodwa. Lena imodi eyintandokazi yomsebenzi obalulekile ngoba uma ikhadi elilodwa lehluleka, ikhophi isatholakala kwelinye.
Okubi ukuthi umthamo osebenzayo uba njengowekhadi elincane. Isibonelo, uma usebenzisa ikhadi elingu-64GB kanye nekhadi elingu-128GB, umthamo wokusekela uzoba "okhawulelwe" ku-64GB ngoba womabili amakhadi kumele aqukathe idatha efanayo.
2. Ukuqopha Okuchichimayo/Okudluliswayo (Ukushintshana Uma Kugcwele)
Imodi yokugcwala ibangela ikhamera ukuthi ibhale amafayela ekhadini lokuqala ize ligcwale, bese idlulisela ngokuzenzakalelayo ekhadini lesibili. Lokhu kulungele ukuqoshwa kwevidiyo ende noma ividiyo edinga ukudlala njalo, njengoba akudingeki uyeke ukusebenza ukuze ushintshe amakhadi.
Okubi ukuthi lesi sici asinikezi izinga elifanayo lokuphepha njengemodi yokusekelayo. Uma ikhadi elisebenzayo lonakele ngaphambi kokuba lithuthwe, idatha ekulo isesengozini yokulahleka.
3. Ukuqopha Okuhlukile/Okuhlukanisiwe (Ukuhlukaniswa Kohlobo Lwefayela)
Kule modi, ungahlukanisa amafayela ngokusekelwe kufomethi noma umsebenzi. Izibonelo ezivame kakhulu yilezi:
– I-RAW igcinwa ekhadini 1, i-JPEG ekhadini 2.
– Izithombe ekhadini 1, amavidiyo ekhadini 2.
– Amafayela anesinqumo esiphezulu ekhadini 1, amafayela e-proxy/amancane ekhadini 2 (kumakhamera athile).
Inzuzo yale modi ukuthi umsebenzi uhlelekile kakhulu. Isibonelo, abathwebuli bezithombe bangathumela ama-JPEG ngqo besuka ekhadini lesibili ngaphandle kokucubungula ama-RAW kuqala.
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Izinhlobo Zesikhala Sekhadi Lememori kanye Nezinhlanganisela
Akuzona zonke izikhala ezidalwe zilingana. Nazi ezinye izinhlanganisela ezivamile:
Isikole samabanga aphansi + Isikole samabanga aphansi (UHS-I/UHS-II)
Lokhu kujwayelekile kakhulu, ikakhulukazi kumakhamera angenazibuko aphakathi nendawo kanye namakhamera e-DSLR. Izinzuzo ukuthi amakhadi e-SD atholakala kalula, angabizi kakhulu, futhi ahambisana namadivayisi ahlukahlukene.
Kodwa-ke, udinga ukunaka ukuthi ngabe zombili izikhala zisekela isivinini esifanayo yini. Amanye amakhamera anesikhala esingu-1 esisekela i-UHS-II (esheshayo) kanye nesikhala esingu-2 esisekela i-UHS-I kuphela. Uma uvula imodi yokusekela, isivinini singase sisale ngemuva kwesikhala esihamba kancane ngoba ikhamera kumele ibhalele womabili amakhadi.
I-CFexpress / XQD + SD
Lokhu kulungiselelwa kuvame ukutholakala kumakhamera asekela ividiyo ene-bitrate ephezulu noma ukuqhuma kwezithombe okusheshayo kakhulu. I-CFexpress (noma i-XQD ezizukulwaneni ezithile) inesivinini sokubhala esisheshayo kakhulu kunamakhadi e-SD ajwayelekile.
Le nhlanganisela iyaguquguquka: ungasebenzisa i-CFexpress kuvidiyo esindayo kanye ne-SD yezithombe, noma okuphambene nalokho. Inkinga ukuthi amakhadi kanye nezifundi zamakhadi ngokuvamile zibiza kakhulu.
I-CFexpress + I-CFexpress
Kwamanye amakhamera ochwepheshe, womabili ama-slots asekela i-CFexpress. Lokhu kulungele umsebenzi onzima ngoba ukusebenza kwawo womabili ama-slots kuyalinganisela. Kodwa-ke, ukutshalwa kwezimali kwabezindaba ngokuqinisekile kuphakeme.
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Umthelela Wezikhala Ezimbili Ekusebenzeni Kwekhamera
Abasebenzisi abaningi bayabuza: ingabe izikhala ezimbili zenza ikhamera ihambe kancane? Impendulo ithi: yebo, kungenzeka kungabi njalo—kuya ngemodi kanye nemininingwane yesikhala.
– Kumodi yokusekelayo, ikhamera ibhala kabili. Uma isikhala esisodwa sihamba kancane, i-buffer ingagcwala ngokushesha lapho kudubula ukuqhuma.
– Kumodi yokugcwala, ukusebenza ngokuvamile kufana nokusebenzisa ikhadi elilodwa, ngoba libhalela imidiya eyodwa ngesikhathi.
– Kumodi yokuhlukanisa, ukusebenza kuncike ohlotsheni lwefayela kanye nendlela ikhamera ehlukanisa ngayo ukubhalwa kwedatha.
Ngakho-ke, ukuze wandise izinzuzo ze-dual slots, welulekwa ukuthi usebenzise ikhadi elisezingeni eliphezulu elinesivinini sokubhala esanele futhi okungcono esilingana naso, ikakhulukazi uma usebenzisa imodi yokusekelayo njalo.
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Ukuhamba Komsebenzi Kobungcweti: Izibonelo Zokusetshenziswa Kwangempela
Izikhala ezimbili aziyona nje isici "sokusekelayo", futhi ziyithuluzi lokuphatha umsebenzi. Nazi ezinye izibonelo zendlela ezisetshenziswa ngayo:
1. Umthwebuli Wezithombe Zomshado
– Imodi: Isipele.
– Isizathu: isikhathi asikwazi ukuphinda, ngakho-ke ingozi kumele incishiswe.
2. Intatheli Yensimu
– Imodi: OKUNGAKAHLANGANI + ukuhlukaniswa kwe-JPEG.
– Isizathu: Ama-JPEG angathunyelwa ngokushesha kumhleli, ama-RAW agcinwa ukuze agcinwe futhi ahlelwe ngokujulile.
3. Umthwebuli Wevidiyo Wemicimbi
- Imodi: Ukuchichima isikhathi eside.
– Isizathu: ukuqopha okuqhubekayo ngaphandle kokushintsha amakhadi njalo.
4. Umdali Wokuqukethwe
– Imodi: Ividiyo ekhadini elisheshayo, isithombe ekhadini lesibili.
– Isizathu: ukugcina ukuzinza kokuqoshwa kwevidiyo, ngenkathi kuhlukanisa amafayela ukuze kube lula ukuwasesha.
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Izinto Okufanele Uzicabangele Ngaphambi Kokuthenga Ikhamera Ye-Dual-Slot
Nakuba kunenzuzo, kunezinto eziningana okufanele uziqaphele:
– Izindleko zemidiya: izikhala ezimbili zisho ukuthi kungcono ukuthi uthenge amakhadi amabili asezingeni eliphezulu esikhundleni selinye.
– Isivinini sesikhala: qiniseka ukuthi zombili izikhala zisekela izinga olidingayo (UHS-II, CFexpress Uhlobo A/B, njll.).
– Ukuthembeka kusadinga izinqubo: izikhala ezimbili azithathi indawo yokusekelayo kwi-laptop, i-hard drive, noma i-cloud. Zimane zinciphise ingozi esigabeni sokubuyisa.
– Imenyu nezilawuli: hlola ukuthi ikhamera ikwenza kube lula yini ukusetha imodi yesikhala bese ukhetha ikhadi elisebenzayo.
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Isiphetho
Izikhala zememori khadi ezimbili kumakhamera edijithali ziyisici esibalulekile, ezinikeza ukuphepha kwedatha okuthuthukisiwe, ukuguquguquka kwesitoreji, kanye nokusebenza kahle kakhulu. Ngezindlela ezifana nokusekela, ukugcwala, kanye nokuhlukaniswa kohlobo lwefayela, abasebenzisi bangenza ngezifiso ikhamera ukuze ivumelane nezidingo ezahlukene zokudubula noma zokurekhoda.
Kwabaqalayo, lesi sici singase sibonakale singesinye esengeziwe. Kodwa-ke, kunoma ubani ovame ukuthwebula imicimbi ebalulekile, osebenzela amakhasimende, noma othwebula amavidiyo angenakukwazi ukwehluleka, ama-dual slots ayitshalomali olunengqondo kakhulu. Ekugcineni, akugcini nje ngomthamo wesitoreji, kodwa futhi nokuthula kwengqondo: ukwazi ukuthi umsebenzi wakho usekelwe kusukela ngesikhathi ucindezela inkinobho yokuvala noma yokurekhoda.
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Uma ungathanda, ngingaguqula lesi sihloko sibe sezobuchwepheshe kakhulu (ngokuqhathaniswa kwe-SD UHS-I vs UHS-II, CFexpress, kanye nemiphumela yazo ku-buffer/burst), noma sithandwe kakhulu ngumfundi ojwayelekile.
